ASTM_D_6456_-_10.pdf

Designation:D645610Standard Specification forFinished Parts Made from Polyimide Resin1This standard is issued under the fixed designation D6456;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification is intended to be a means of callingout finished plastic parts ready for industrial or consumer use.1.2 This specification covers finished parts and shapes fromwhich parts are machined,made from a semi-crystallinepolyimide(PI).1.3 This specification is intended to replace MIL-R-46198and Provisional Standard Specification PS 93.NOTE1There is no known ISO equivalent to this standard.1.4 This specification covers parts made from semi-crystalline polyimide,which is a thermosetting material thatshows no softening or melting by DMA(D4065)at or below260C(500F).1.5 Since PI is a thermoset resin,no provisions are includedfor recycled products.1.6 The classification system outlined in this specification isintended to be identical to that used by Department of Defensefor over 20 years.No changes are intended at this time.1.7 The values are stated in SI units and are regarded asstandard in all property and dimensional tables.For referencepurposes,inch-pound units are stated in parentheses.1.8 ApplicationParts in this specification are generallyused for applications requiring the following combination ofproperties:low coefficient of friction,and low thermal expan-sion coupled with heat resistance for continuous operation attemperatures up to 260C(500F)and for short-term excur-sions upward to 482C(900F).1.9 The following precautionary caveat pertains only to thetest method portion,Section 12,of this specification:Thisstandard does not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2.Referenced Documents2.1 ASTM Standards:2D638 Test Method for Tensile Properties of PlasticsD695 Test Method for Compressive Properties of RigidPlasticsD790 Test Methods for Flexural Properties of Unreinforcedand Reinforced Plastics and Electrical Insulating Materi-alsD792 Test Methods for Density and Specific Gravity(Rela-tive Density)of Plastics by DisplacementD883 Terminology Relating to PlasticsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD1708 Test Method for Tensile Properties of Plastics by Useof Microtensile SpecimensD3892 Practice for Packaging/Packing of PlasticsD4065 Practice for Plastics:Dynamic Mechanical Proper-ties:Determination and Report of ProceduresE8 Test Methods for Tension Testing of Metallic Materials2.2 ANSI Standard:Z1.4 Standard for Sampling Plans and Tables for Inspectionby Attributes3,42.3 Military Standards:5MIL-R-46198 Resin,Polyimide,Hot Pressed or Pressed andSinteredMIL-STD 129 Standard Practice,Military Marking for Ship-ment and Storage3.Terminology3.1 DefinitionsTerms are defined in accordance with Ter-minologies D883 and D1600 unless otherwise indicated.4.Classification4.1 Product shape and size as defined in the applicablepurchase order.1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved Aug.1,2010.Published September 2010.Originallyapproved in 1999.Last previous edition approved in 2004 as D6456-99(2004).DOI:10.1520/D6456-10.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036.4Replaced MIL-STD-105.5Available from Standardization Documents Order Desk,DODSSP,Bldg.4,Section D,700 Robbins Ave.,Philadelphia,PA 19111-5098*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.2 The type of product shall be categorized by type andclass depending on resin and filler compositions defined asfollows:Type IUnfilled base resinType IIResin with graphite fillerClass 115%by weight graphite filler,nominalClass 240%by weight graphite filler,nominalClass 315%by weight graphite and 10%by weight fluorocarbonfillers,nominalType III15%by weight molybdenum disulfide filler,nominalNOTE2Filler contents shown above are approximate.See Table 1 forexact composition.4.3 Polymer compositions shall be specified by use oftype/class designations as described in Table 1.4.4 Manufacturing method and product form shall be speci-fied by us